Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1987__58_155228, author = {R.W. Kieboom}, title = {A {Pullback} theorem for cofibrations.}, journal = {Manuscripta mathematica}, pages = {381--384}, publisher = {mathdoc}, volume = {58}, year = {1987}, zbl = {0617.55002}, url = {http://geodesic.mathdoc.fr/item/MM2_1987__58_155228/} }
R.W. Kieboom. A Pullback theorem for cofibrations.. Manuscripta mathematica, Tome 58 (1987), pp. 381-384. http://geodesic.mathdoc.fr/item/MM2_1987__58_155228/